Concrete and Clay

This year I have decided to vote in the English general election, but who for?

I'm no psychoanalyst but there must be some serious fuckedupness about someone who wants to burn down a building with 200 people inside at any given time. Are they just "having a laugh"? Are they just after a quick adrenaline buzz? Are they angry and want to rail against the system, world, etc.? I can't say that I am too chuffed about having the window frame downstairs from my office go up in flames. Any suggestions of what to do about the junior firestarter to ensure that he doesn't graduate?